Senior iOS Engineer — Build a Scalable Mobile Platform

Requirements

• Deep expertise in Swift and iOS platform internals (performance, lifecycle, memory)

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• Strong architectural judgement across native, shared and web approaches

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• Experience working on large-scale mobile applications with multiple contributors

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• Ability to define platform boundaries and make pragmatic trade-offs

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• Experience enabling teams to contribute safely without central ownership

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• Strong problem-solving skills across complex technical systems

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• Excellent communication and ability to influence across teams

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• (Desirable) Experience working with Kotlin Multiplatform or shared code approaches

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• (Desirable) Experience working with Apple’s in-app purchase ecosystem (StoreKit), including subscription models, entitlements, and edge cases (restoration, retries, offline behaviour)

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• (Desirable) Experience in hybrid app architectures (webviews, JS integration)

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• (Desirable) Familiarity with observability and performance monitoring tools

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• (Desirable) Experience influencing engineering practices across teams

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• (Desirable) Experience supporting teams through architectural or platform transitions

What the job involves

• We’re looking for a Senior iOS Engineer who is passionate about building a scalable, reliable mobile platform and enabling teams across the organisation to contribute confidently and independently to the FT”s award-winning digital products

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• You’ll join the Mobile Apps team, a multidisciplinary, cross-functional group focused on delivering an outstanding mobile experience for our world class news

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• You’ll collaborate closely with engineers, product managers, business analysts and designers to build and evolve a premium mobile application and platform for our customers

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• Define and evolve iOS platform boundaries (native vs shared vs web layers)

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• Ensure performance, reliability, and UX consistency as contribution scales across multiple teams

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• Make architectural trade-offs across native, hybrid and shared approaches

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• Identify and address platform risks (performance, memory, app size, offline behaviour)

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• Define and enforce native constraints (performance, memory, app size, lifecycle) to protect platform integrity

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• Define and evolve guardrails and constraints that enable safe contribution at scale

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• Guide teams on how to build within platform boundaries

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• Reduce reliance on central ownership through systems and tooling

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• Collaborate with teams to improve quality without blocking delivery

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• Build and maintain high-quality iOS features and platform capabilities where native expertise is required

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• Work with hybrid technologies (webviews, shared logic) where required

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• Collaborate with cross-functional teams to deliver high-impact outcomes

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• Contribute to continuous improvement of engineering practices

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• Use automated tooling and systems to ensure high quality outcomes throughout delivery

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